Home / 15,930-31,455

Finding the Third Proportional to 15,930 and 31,455

Calculator

Solution

The third proportional to 15,930 and 31,455 is: 62,110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930 : 31,455 = 31,455 : x
  2. Step 2: Convert to fraction form
    15,930/31,455 = 31,455/x
  3. Step 3: Cross multiply
    15,930x = 31,455 × 31,455
  4. Step 4: Simplify right side
    15,930x = 989,417,025
  5. Step 5: Solve for x
    x = 989,417,025/15,930
  6. Step 6: Final answer
    x = 62,110.30

Related Problems

Find third proportional to 7,965 and 15,727.50
Half scale
Find third proportional to 31,860 and 62,910
Double scale
Find third proportional to 15,932 and 31,459
Similar ratio
Find third proportional to 23,895 and 47,182.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.